16 Heol Y Castell, Ely, Cardiff, CF5 5LS
About 16 Heol Y Castell
16 Heol Y Castell is a mid-terrace house in Ely, Cardiff, Cardiff (CF5 5LS). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (November 2014) shows an E (score 40), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 83), a 3-band jump. The latest certificate is from November 2014, so improvements made since then won't be reflected.
Held since November 1999 — that's 27 years off the open market, well above the local norm. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1995–1999, sale prices on this property compounded at 6.9% per year. Today's modelled estimate of £171,000 sits 213.8% above the 1999 sale of £54,500. On a £-per-square-foot basis, the last sale (£54/sq ft) was about 64.3% below the postcode norm.
Energy performance
16 Heol Y Castell sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 25 Nov 2024
EPC Rating
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Planning history
16 Heol Y Castell has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
16 Heol Y Castell's modelled value sits at over four times its earliest registered sale price (1995).
£171,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.9% per year over 5 years.
£54,500
Growth on file: 6.9% per year over 5 years.
Sales timeline
5 November 1999Most recent
£54,500
+36.4%over 4 years10 March 1995
£39,950
Median price across the last 5 sales in CF5 5LS: £182,000 (2025–2022).
Nearby sales in CF5 5LS
2 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Jul 2025
£180,00014 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Nov 2024
£170,00022 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Oct 2023
£182,00024 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold Sept 2023
£195,00042 Heol Y Castell, Ely, Cardiff, CF5 5LS
Sold May 2022
£185,000
Versus other Heol Y Castell homes
Price per m² for 16 Heol Y Castell lags the street by a wide margin.
Price per m²
£580
Street avg £1,821
Floor Area
94 m²
Street avg 88 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
7.0 t/year
Street avg 2.9 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Heol-y-Gaer — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







